Vary and increase the intensity and amount of vapour you create with this variable voltage Ego Twist battery, variable from 3.2v to 4.8v! Our Ego Twist batteries create significantly more vapour than a standard 900 mAh battery. Upgrade from an E-Cig and not only get an even more realistic experience but also enjoy much longer lasting battery-life. We use only the highest quality battery cores, providing the ultimate vapour production, reliability and battery life.